Modular Hull Thrusters for Low-Speed Vessel Maneuvering
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Solution Overview
Problem
Existing thruster systems for marine vessels face challenges in maneuverability at low speeds, particularly in wake-free zones, shallow areas, and when docking or trailering, due to limited directional control provided by main engine, propeller, and rudder systems.
Innovation Solution
A modular thruster system with independently controlled motor/propeller units mounted at various positions on the vessel's hull, allowing for precise application of thrust in multiple directions, enhancing maneuverability and reducing the need for large, centralized thruster motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a main engine, propeller, and rudder system is used for steering, then the vessel can achieve basic propulsion and directional control, but at low speeds the propeller is not always spinning and the rudder produces little or no turning effect, resulting in diminished directional control
Solution Approach 1:
The patent divides the propulsion and steering function into multiple independent motor/propeller units positioned at different locations on the vessel's hull. Each unit can be independently controlled to provide thrust in different directions, enabling effective maneuvering at low speeds where traditional single-propeller systems fail to provide adequate directional control.
2Ease of operation
If a centralized thruster motor system is used, then thrust can be applied to maneuver the vessel, but the system becomes complex and maintenance becomes difficult
Solution Approach 1:
The patent employs multiple independent motor/propeller units rather than a single centralized thruster system. Each unit is self-contained and can be independently controlled, which simplifies the overall system architecture while providing complex maneuvering capabilities through coordinated operation of multiple simple units.
Solution Approach 2:
Different motor/propeller units are positioned at specific locations on the hull to provide thrust in different directions. Each unit is optimized for its specific location and function, allowing the vessel to achieve sophisticated maneuvering through local thrust applications rather than relying on a single complex centralized system.
3Measurement precision
If traditional thruster systems are used, then some maneuverability is achieved, but precise positioning and directional control at low speeds is limited
Solution Approach 1:
By dividing the thrust generation into multiple independent units positioned at different locations, the system can apply thrust precisely at specific points on the hull. This segmentation enables fine-grained control over the vessel's movement and positioning at low speeds, achieving precision that cannot be obtained with traditional single-propeller systems.
Solution Approach 2:
The patent positions motor/propeller units at specific locations to provide localized thrust applications. This allows precise control over the vessel's direction and position by applying thrust at optimal points, enabling accurate maneuvering and positioning at low speeds where traditional systems lack sufficient control authority.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The modular thruster system provides improved directional control and maneuverability at low speeds, allowing for precise positioning and reduced risk of collisions, while also simplifying maintenance and reducing costs by enabling easier replacement of individual units.
Implementation Method 1
separate motor/propeller units located at various positions on the vessel's hull
Data Source
AI summary
A thruster system for improved steering and maneuverability of a marine vessel when operating at relatively low, or wakeless speeds, such as in the vicinity of docks, swimmers or other obstacles, or when trailering, beaching or mooring. The thruster system has a modularized design adapted to independently control separate motor/propeller units located at various positions on the vessel's hull. Each propeller of the modular thruster motor system has its own relatively small, electric motor and mounting bracket, permitting each motor to be separately mounted to a location on the hull of the marine vessel apart from other thruster motors. The thruster system is further enhanced by an electrical control system for controlling each modular thruster motor system of the thruster system. In some embodiments, a charging system is provided that permits each electrical control system to be separately charged from the marine vessel's main battery.